Valve Packing Maintenance & Operation for Anhydrous Ammonia
Anhydrous Ammonia valves will typically be equipped with one of two different styles of packing assemblies. This bulletin is designed to educate the operators on the different types of packing and the suggested maintenance procedures.
Routine inspections of storage tanks, valves and piping systems is an essential part of ensuring a leak free operation; these inspections should be completed at least four times per year.
Tank inspection checklists are provided in our anhydrous ammonia storage and handling booklet, which is available hard copy and on our web site at www.tannerind.com. These forms can be copied and utilized for tank and valve inspection documentation.
Always wear proper protective equipment when performing valve inspections and when performing leakage testing.
Litmus paper or Sulfur Tapers may be used during the inspection to check valve stems and threaded connections for leakage. Should you need either of these testing products, please contact Tanner Industries, Inc.